Microstructure-property relations of solid oxide fuel cells are studied using ZrO2-In2O3 as a model electrolyte/electrode, and ZrO2(Y2O3)-La0 85Sr0.15MnO3-Pt mesh as a model electrolyte/electrode/current collector. Electrochemical performance of the cells depends strongly on the microstructure of electrode as well as the geometry of the current collectors. A decrease in effective electrode area occurs both on the microscopic level with a coarse and inhomogeneous electrode microstructure and on the microscopic level with a wide contact spacing of the current collectors. Microstructure tailoring as well as the current collector geometry becomes important with decreasing operation temperature of the fuel cells.
All Science Journal Classification (ASJC) codes
- General Chemistry